Adaptive Multi-Rate Wideband, or AMR-WB is a new technology that is set to dramatically change voice-calls in SA. MTN customers with a smart device may have noticed a marked improvement in phone call quality in the recent weeks.
More commonly known as HD Voice, this technology is a patented speech audio coding standard developed to improve the speech quality of calls made and to reduce background noise to deliver clearer audio. Even when a caller is in a noisy environment, the person at the other end of the line will be able to hear them clearly.
Making use of a audio frequencies between 50Hz to 7 000Hz AMR-WB technology was developed by Nokia and VoiceAge, a Canadian voice and audio codec developer, to utilise the same amount of bandwidth as traditional audio codecs. Landline telephones use a much narrower 300Hz to 3 400 Hz.
Countries already utilising this technology include around 60% of EU member countries, Australia, Canada, Egypt, Hong Kong, India, and Kenya amongst others.